Which statement explains the relationship between the amount of energy it takes to break a bond and the amount of energy released when the same bond is formed? (1 point)

A.The amount of energy it takes to break a bond is always greater than the amount of energy released when the bond is formed.

B.The relationship depends on the particular bond.


C.The amounts of energy are always equal.


D.The amount of energy it takes to break a bond is always less than the amount of energy released when the bond is formed.

Answer:

B, C and D

Explanation:

Which element requires the least amount of energy to remove the most loosely held electron?

aanswer: bromine

The expected major organic product from treatment of 4-methyl-2-pentene with sodium metal in liquid ammonia is trans-4-methyl-2-pentene.

There are several ways to prepare alkanes from alkenes. The hydrogenation of alkenes is the most common method for preparing alkanes. This reaction converts alkene to alkane. It is an exothermic reaction that requires hydrogen gas and a catalyst. Similarly, sodium metal in liquid ammonia can be used to prepare alkanes from alkenes.The reaction of 4-methyl-2-pentene with sodium metal in liquid ammonia will produce trans-4-methyl-2-pentene as the expected major organic product.The reaction mechanism can be explained as follows:

Sodium metal is a powerful reducing agent. It has a high affinity for electrons. When sodium metal is placed in liquid ammonia, it reacts to produce a deep blue solution of sodium cation and electrons. The reaction can be represented as:NH3 + Na → Na+ + NH2− + e−Sodium cation can act as an electrophile and can react with the double bond of 4-methyl-2-pentene.

The resulting intermediate can be stabilized by the solvent ammonia. The electron-rich anion produced during the reduction can abstract a proton from the intermediate to give the trans isomer.

The reaction can be represented as follows:

CH3CH=C(CH3)CH2CH3 + Na → CH3CH-CH(CH3)CH2CH3 + Na+CH3CH-CH(CH3)CH2CH3 + e- → CH3CH-CH(CH3)CH2CH2- + NH2-CH3CH-CH(CH3)CH2CH2- + NH2- → CH3CH-CH(CH3)CH2CH2NH2CH3CH-CH(CH3)CH2CH2NH2 + H+ → trans-CH3CH=CHCH(CH3)CH3

Thus, trans-4-methyl-2-pentene is the expected major organic product from treatment of 4-methyl-2-pentene with sodium metal in liquid ammonia.

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Answer: Copper

Explanation: A material's ability to form thin sheets under pressure by hammering or rolling is called Malleability.Metallic bond is a term used to describe the collective sharing of a sea of valence electrons between several positively charged metal ions.Metallic bonding is a type of chemical bonding that arises from the electrostatic attractive force between conduction electrons (in the form of an electron cloud of delocalized electrons) and positively charged metal ions.A strong metallic bond will be the result of more delocalized electrons, which causes the effective nuclear charge on electrons on the cation to increase, in effect making the size of the cation smaller. Metallic bonds are strong and require a great deal of energy to break, and therefore metals have high melting and boiling points

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Answer:

Hey mate

Explanation:

Yes these methods are only used in biology, chemistry, physics, geology and physcology.... They can't be used in maths or other subject, as it is said SCIENCE IS SCIENCE!

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Answer:

Conservation of energy means that the total change of energy in any system is always equal to the total energy transferred into or out of the system.

Answer:

Conservation of energy means that the total change of energy in any system is always equal to the total energy transferred into or out of the system.

Explanation:

Answer:

80 g

Explanation:

Alloy = nichrome

100 g of nichrome contains 20 g of chromium

Contains only two elements (Nickel and Chromium) hence;

Mass of Alloy = Mass of Nickel + Mass of Chromium

100 = Nickel + 20g

Nickel = 100 g - 20 g = 80 g

Answer:

Explanation:

The main answer to your question is that the value of "a" in the given nuclear reaction is 4.

To provide an explanation, "a" represents the atomic mass number of the unknown particle "x" produced in the reaction.

The total atomic mass number of the reactants (np) must be equal to the sum of the atomic mass numbers of the products (pa and x), hence:
237 + 0 = 233 + 4x
Solving for "x", we get:
x = (237 - 233)/4 = 1
Therefore, the atomic mass number of the unknown particle "x" is 4+91 = 95.
In the nuclear reaction 237_93 Np → 233_91 Pa + A_Z X, the value of 'a' is 4 to maintain the conservation of mass number.

In summary, the value of "a" is 4, and the atomic mass number of the unknown particle "x" is 95.

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Answer: B. Winter

Explanation: The southern hemisphere is leaning towards the sun meaning that that hemisphere is closer to the sun therefore it is summer and spring. With the northern hemisphere and north america leaning away from the sun, it is farther away meaning it is winter.

The entropy of 100 g of water at 100 oC changes by 60.5 J/K.  when it is very slowly converted into steam at 100 oC.

To determine the entropy change when 100 g of water at 100°C is slowly converted into steam at 100°C, we can use the formula:

ΔS = m * L / T

where ΔS is the entropy change, m is the mass of the water (100 g), L is the latent heat of vaporization for water (approximately 2.26 x 10^6 J/kg), and T is the temperature in Kelvin (100°C + 273.15 = 373.15 K). Note that we need to convert the mass of water into kg (100 g = 0.1 kg).

ΔS = (0.1 kg) * (2.26 x 10^6 J/kg) / (373.15 K)

ΔS ≈ 60.5 J/K

So, the entropy change when 100 g of water at 100°C is very slowly converted into steam at 100°C is approximately 60.5 J/K.

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Heat is transferred through convection by the movement of a liquid or gas and is denoted as option D.

this is defined as the process of heat flow through a fluid which include a liquid or gas.

This process doesn't involve contact between the object unlike in conduction. A typical example is the heat flow which occurs in the atmosphere thereby making it the most appropriate choice.

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Answer:

2.coefficient how many molecules of Aluminum hydroxide there are

Answer:

A covalent bond is a chemical bond that involves the sharing of electron pairs between atoms. These electron pairs are known as shared pairs or bonding pairs, and the stable balance of attractive and repulsive forces between atoms, when they share electrons, is known as covalent bonding.

Explanation:

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Answer:

Notice that tellurium is listed before iodine even though its atomic mass is higher. Mendeleev reversed the order because he knew that the properties of iodine were much more similar to those of fluorine (F), chlorine (Cl), and bromine (Br) than they were to oxygen (O), sulfur (S), and selenium (Se).

The tellurium is listed before iodine even though its atomic mass is higher. Mendeleev reversed the order because he knew that the properties of iodine were much more similar to those of fluorine (F), chlorine (Cl), and bromine (Br) than they were to oxygen (O), sulfur (S), and selenium (Se).

The periodic table is a tabular Form of the chemical elements classified by atomic number, from the element with the least atomic number, hydrogen, to the element with the most atomic number.

The atomic number is the number of protons in the nucleus of an atom.

Thus, The tellurium is listed before iodine even though its atomic mass is higher. Mendeleev reversed the order because of its properties.

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1 Hydrochloric acid and pepsin digest protein  the stomach. The stomach squeezes to mix food.  - match to  c

2   Nutrients are absorbed into the blood by villi in the small intestine. - match to a

3 Water is absorbed by from the food waste back into the body.  -match to i

4 The tongue pushes food to the back of the mouth where it is swallowed.  - matches to  j

5   Food is chopped and ground in the mouth. - match to f

6 Bile (produced by the liver and stored in the gallbladder) enters the small intestine to break down fats. - matches to e

7  Solid waste material is forced out of the body. - matches to  g

8  "Food" moves to the small intestine (through the duodenum - matches to  b

9  Waste (food) leaves the small intestine and enters the large intestine. - matches to h

10 The food moves along the esophagus to the stomach - matches to  d

The human digestive system consists of the gastrointestinal tract plus the accessory organs of digestion.

The Digestion of food  involves the breakdown of food into smaller and smaller components, until they can be absorbed and assimilated into the body.

This digestion process have been described above in matching order.

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A diprotic weak acid is an acid that has two replaceable hydrogen atoms. The acid will then undergo two dissociations to produce two hydrogen ions. As a result, the acid's reaction with bases is more complex, and it is dependent on the concentration of acid and pH.

A diprotic weak acid is an acid that has two replaceable hydrogen atoms. The acid will then undergo two dissociations to produce two hydrogen ions. As a result, the acid's reaction with bases is more complex, and it is dependent on the concentration of acid and pH. When titrated, the following data must be considered: the concentration of the acid, the concentration of the base, and the pKa values of the acid. The equivalent point is the point in titration where the number of moles of acid is equal to the number of moles of base added to it. In a titration curve, the first equivalence point is determined by the point where the initial amount of diprotic acid is neutralized. It's the point where the base added to the acid neutralizes all the H+ present in the solution.

The amount of strong base required to reach the first equivalence point can be calculated as follows: As per the equation, 1 mole of diprotic acid releases two moles of hydrogen ions, which means that to neutralize one mole of acid, you will require two moles of strong base. Therefore, you would require two moles of strong base to reach the first equivalence point in a titration curve. The pKa of the second titratable hydrogen would be equal to the pH at the halfway point between the two equivalent points. As a result, the amount of strong base required to reach the pH equivalent to the pKa of the second titratable hydrogen is also equal to the amount required to achieve the halfway point between the two equivalence points.

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Answer:

The velocity of the bb when it reaches a height of 203 m can be determined using the laws of projectile motion. Since the bb is moving vertically upwards, its velocity at that height will be zero.

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Answer: v = 83.96 m/s

Assuming the acceleration due to gravity is approximately 9.8 m/s^2, we can use the principles of projectile motion and energy conservation.

Using the equation for the vertical displacement of an object in free fall:

Δy = (v₀² - v²) / (2g)

Δy = vertical displacement (203m)

v₀ = initial velocity (105 m/s)

v = final velocity (not known yet)

g = accerlation due to gravity (9.8 m/s^2)

Lets rearrange the equation to solve for the final velocity:

v = v = √(v₀² - 2gΔy)

Substituting the given values:

v = √(105² - 2 * 9.8 * 203)

v ≈ √(11025 - 3979.6)

v ≈ √(7054.4)

v ≈ 83.96 m/s

Therefore, when the BB pellet is at the height of 203m, its velocity will be approximately 83.96 m/s.

Answer:

A chart that shows the elements based on atomic number, from lowest to highest.

Explanation:

Answer:

The answer will be listed below.

Explanation:

The Periodic Table is a display of 118 different chemical elements. They are arranged by their atomic numbers. The Periodic table displays the element's chemical symbol, mass, atomic number, and what group they are in.

True. 1-octanol is a combustible liquid with a flashpoint of 86°C and an auto-ignition temperature of 258°C, according to the provided SDS.

The SDS (Safety Data Sheet) for 1-octanol indicates that it is a combustible liquid. According to the SDS, 1-octanol has a flashpoint of 86°C (187°F) and an auto-ignition temperature of 258°C (496°F). These values suggest that 1-octanol can easily ignite in the presence of an ignition source and may burn at relatively low temperatures. Additionally, the SDS provides information on the fire and explosion hazards associated with 1-octanol and recommends appropriate handling procedures and precautions to minimize the risk of fire or explosion. Therefore, it is important to handle 1-octanol with care and follow appropriate safety protocols when working with this substance.

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The complete question is:

the SDS for 1-octanol is provided here. (links to an external site.) is 1-octanol a combustible liquid? True or False.

K+ ions are more abundant in the interior of resting neuron that in the fluid surrounding the neuron.

An active pump can keep the larger concentration of Na+ outside the neuron because there is resistance to the passage of Na+ through the neuronal membrane. At rest, K+ concentrations are higher inside the neuron.

Which ions are more abundant outside of a resting cell?

The sodium ion concentration inside the cell is low, whereas the sodium ion concentration outside the cell is higher.

What ion contributes the most to the resting potential of neurons?

Potassium is the main ion responsible for determining the resting membrane potential. In skeletal muscle, potassium conductance makes up around 20% of the resting membrane conductance, and it makes up the majority of the resting conductance in neurons and nerve fibers.

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Answer:

The foam board has a larger gravitational force but it also has a very large air resistance force. The net (total) force on the foam board will give it a smaller acceleration than paper.

Explanation:

The air molecules get knocked away and take some of the kinetic energy away from the object, which makes the object slow down

Answer:

Unknown 4

Explanation:

If 1.44 moles of HCl is consumed in the chemical reaction, 52.4064 grams of HCl are consumed.

The number of grams of HCl consumed can be calculated by multiplying the number of moles of HCl chemical by its molar mass. The molar mass of HCl is 36.46 g/mol.

So, to find the number of grams of HCl consumed, we can use the following formula:

= grams of HCl

= moles of HCl × molar mass of HCl

Putting the values, we get:

= Grams of HCl

= 1.44 moles × 36.46 g/mol

= 52.4064 g

Therefore, 1.44 moles of HCl is equivalent to 52.4064 grams of HCl.

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Answer:

flourine(1681),carbon(1086),lithium(520) and potassium(419)

as we can see that the ionization energy of flourine is the highest than carbon than lithium and than potassium

Explanation:

i hope it will help you

Answer:

Potassium, Lithium, Carbon, Fluorine

Explanation:

potassium has the least and Fluorine has the most

a) The equilibrium will shift to the left. b) the equilibrium will shift to the left, favoring the formation of reactants (H₂ and O₂). c) the equilibrium will shift to the left.

In the reaction 2H₂(g) + O₂(g) → 2H₂O(g), equilibrium can be affected by temperature, pressure, and concentration changes.

a. Chilling the equilibrium mixture to a temperature where steam liquefies involves an exothermic process. According to Le Chatelier's principle, the system will shift to counteract this change, moving in the direction that absorbs heat. Since the formation of H₂O is exothermic, the equilibrium will shift to the left, favoring the reactants (H₂ and O₂).

b. When water is added to the system, the concentration of the product (H₂O) increases. Le Chatelier's principle states that the equilibrium will adjust to counteract the change by reducing the concentration of H₂O. Thus, the equilibrium will shift to the left, favoring the formation of reactants (H₂ and O₂).

c. Decreasing the concentration of hydrogen (H₂) affects the balance between reactants and products. To counteract this change, the equilibrium will shift in the direction that increases the concentration of H₂. Therefore, the equilibrium will shift to the left, favoring the formation of reactants (H₂ and O₂) and consuming some of the O₂ present in the system.

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The full question is:

Consider the following reaction: 2H₂(g) + O₂(g)→2H₂O(g)

Describe the changes that occur in the reaction if the following changes are carried out. In which direction does the equilibrium shift?

a. the equilibrium mixture is chilled to a temperature at which steam liquefies

b. water is added to the system

c. the concentration of hydrogen is decreased

Answer:

C. Trigonal planar

Explanation:

Hello!

In this case, according to the VSEPR theory, it is possible to realize that this molecule has three bonded atoms to the main carbon, one oxygen and two hydrogens. In addition, the aforementioned central carbon atom does not have any lone pairs, therefore, the molecular geometry for three bonded atoms and zero lone pairs would be trigonal planar.

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Answer:To determine who must be heterozygous for the trait based on the given pedigree diagram, we need to look for patterns of inheritance and consider the possible genotypes of the individuals.

If the trait is dominant, individuals who exhibit the trait can either be homozygous dominant (TT) or heterozygous (Tt). Homozygous dominant individuals would have both parents with the trait, while heterozygous individuals would have one parent with the trait.

From the pedigree diagram, we can observe that the child without the trait does not have any parent with the trait. This means that the child without the trait must have two recessive alleles (tt) and is therefore homozygous recessive, not heterozygous.

Both parents in the pedigree diagram have the trait, indicating that they are both either homozygous dominant (TT) or heterozygous (Tt). Therefore, it is possible for one or both parents to be heterozygous for the trait.

Based on this information, the correct answer is:

D. Only one parent

Explanation:

Answer:

B. Both Parents

Explanation:

If the trait is dominant, a person who is homozygous dominant or heterozygous for the trait will express the trait. In the pedigree given, we see that both affected individuals (the red circle and squares) have at least one affected parent. This suggests that the trait is likely inherited from both parents, which means both parents must be heterozygous (i.e., carry one dominant and one recessive allele for the trait).

The child without the trait is homozygous recessive, meaning they inherited two copies of the recessive allele from both parents who are both heterozygous for the trait. Therefore, the correct answer to the question is B, "Both parents."